KR20110056792A - Vehicle tire improved kerf - Google Patents

Abstract

PURPOSE: A tire for a vehicle with improved kerfs is provided to improve grip performance by easily discharging water to the outside along a spiral wall. CONSTITUTION: A tire for a vehicle with improved kerfs comprises a tread(1), a sidewall(2), and a bead part. Blocks(3) are formed on the grounding surface of the tread. Kerfs(4) are formed in the blocks. Flow paths(5) are formed in the inner bottom of the kerfs. Screw parts(6) are formed on the inner surface of the flow paths in a concave shape.

Description

Automotive tire improved kerf {Vehicle tire improved kerf}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automobile tires, and more particularly to automobile tires formed by forming a cuff on a tread.

Heavy duty tires, especially tires mounted on the drive shaft, require a good grip force because of the high traction force.

In order to make the tire have a good grip force, a technique is known in which a tread is formed in a block type or a cuff is formed in each block. In addition to forming a fork, the tire is provided by bending the cuff in 3D due to the bending in the direction of the tread depth.

However, when there is water on the road surface, the water between the road surface and the tire reduces the braking performance. Thus, a channel having a diameter larger than the width of the cuff is formed on the inner bottom of the cuff formed in the tire, and the flow channel sucks water on the road surface by a spite action, and discharges the sucked water to the tire side. However, in discharging the water sucked by the flow path at the bottom of the cuff to the side, the discharge resistance of the flow path is large, and there is a drawback that the water removal effect between the road surface and the tire is not satisfactory due to insufficient discharge performance of the sucked water. However, increasing the diameter of the flow path not only makes it difficult to vulcanize the tire by releasing the cuff blades that form the cuff during tire vulcanization, but may also adversely affect other performance of the tire, thereby increasing the diameter of the flow path. There is a limit, and flow paths within such limits have been regarded as unavoidable.

Accordingly, the present invention is to solve the problem of providing a tire having a good water discharge effect by reducing the discharge resistance of the water without expanding the diameter of the cuff bottom passage.

In order to solve the above problems, the present invention, in forming a flow path on the inner bottom of the cuff to be formed on the tread of the tire, to provide a tire formed by forming a spiral portion on the inner wall of the flow path is made of a spiral tube. .

In the present invention as described above, the water sucked by the dropper action of the flow path is discharged to the outside along the spiral wall formed on the inner wall of the flow path relatively easily, so that water between the tire and the road surface is relatively easily removed and the tire on the road surface with water This has the effect of improving the grip performance.

This invention will be described with reference to the accompanying drawings.

A tread 1 and a sidewall 2 and a bead portion (not shown), a block 3 is formed on the ground plane of the tread 1, and a cuff 4 is formed on the block 3. In the automobile tire in which the flow path 5 is formed in the inner bottom of the cuff 4, the present invention provides a tire formed by forming the threaded portion 6 on the inner wall surface of the flow path 5 of the inner bottom of the cuff 4. to provide.

The screw portion 6 formed on the inner wall surface of the flow path 5 may not only be formed so that the screw portion 6 protrudes, but also the screw portion 6 may be concave. In addition, the thread or the valley may be adopted in any shape such as a triangular mountain shape or a square round shape, and therefore, the shape of the threaded portion 6 is not to be considered.

However, if the thread pitch length of the threaded portion 6 is short, it may rather provide resistance to discharge. In particular, when the threaded portion is formed to protrude into the flow path, moreover, when the thread pitch length of the protruding threaded portion is short and the height of the thread is high, such a thread may rather cause a resistance to the discharge of water in the flow path. Therefore, it is preferable to form the pitch length of the screw part 6 to 1 to 5 times the diameter of the flow path 5. However, when the screw portion is formed concave on the inner wall surface of the flow path, it is possible to solve the concern about the increase in the resistance value due to the long and short pitch length.

The cuff 4 including the threaded portion 6 may be formed by installing the cuff blade 7 shown in FIG. 2 in the vulcanized mold. The cuff blade 7 in FIG. 2 shows an embodiment of a screw thread in which the screw portion is recessed in the inner wall surface of the flow path.

1 is a perspective view of the main portion of the present invention.

Figure 2 is an embodiment of a cuff blade for forming a threaded cuff of the present invention (A) is a side view of the cuff blade, (B) is a front view of the cuff blade.

DESCRIPTION OF THE RELATED ART [0002]

1. Tread

2. Sidewall

3. Block

4. Cuff

5. Euro

6. Screw part

7. Cuff Blades

Claims (2)

Comprising a tread, a sidewall and a bead portion, a block is formed on the ground surface of the tread, a cuff is formed on the block, the flow path is formed on the inner bottom of the cuff, the flow path is characterized in that the threaded portion formed on the inner wall surface Car tire which improved cuff made with. The automobile tire according to claim 1, wherein the screw portion is formed concave on an inner wall surface of the flow passage.

Images